XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3 3059
at 8 minutes, since after this time the copper grade recov-
ered is lower than the feed grade. The maximum recover-
ies of fine mineral were 91.4% of copper and 40.59% of
iron. On the other hand, Figure 1b presents the recovery
of chalcopyrite and pyrite obtained as a function of time.
It is possible to observe that, at a flotation time of 8 min,
the recovery of chalcopyrite and pyrite using ERVOs was
96.39% and 66.11% respectively, which shows a greater
selectivity of ERVOs for chalcopyrite. This could be because
ERVOs comes from soybean oils, which has linolenic acids
that are absent in the first ester. The presence of these acids
could explain the increase in selectivity of this compound.
Figure 2a shows the recovery of copper and iron
obtained as a function of time using BSs as a collecting
reagent. It is possible to observe that BSs presented a flota-
tion kinetics slower than the obtained with ERVOs, since
even at the maximum flotation time studied, it was not
possible to stabilize the recovery curve of both elements.
However, at a flotation time of 8 minutes the copper and
iron recovery were near to 55% and 18%, respectively. It
is important to note that the recovery results of both ele-
ments, were lower than obtained by the ERVOs. On the
other hand, Figure 2b shows a chalcopyrite and pyrite
recovery of 95.12% and 65%, respectively, achieving a
higher chalcopyrite and pyrite recoveries compare to those
obtained with ERVOs.
Figure 3a and 3b show a comparative of the chalco-
pyrite and pyrite recovery as a function of time, using the
Figure 1. Elemental recovery (s) and mineral (b) recovery obtained as a function of time, at pH 8 and using 100 g/t of ERVOs
as collector and 15 g/t of MIBC as frother
Figure 2. Elemental (a) and mineral (b) recovery obtained as a function of time, at pH 8 and using 100 g/t of BSs as collector
and 15 g/t of MIBC as frother
at 8 minutes, since after this time the copper grade recov-
ered is lower than the feed grade. The maximum recover-
ies of fine mineral were 91.4% of copper and 40.59% of
iron. On the other hand, Figure 1b presents the recovery
of chalcopyrite and pyrite obtained as a function of time.
It is possible to observe that, at a flotation time of 8 min,
the recovery of chalcopyrite and pyrite using ERVOs was
96.39% and 66.11% respectively, which shows a greater
selectivity of ERVOs for chalcopyrite. This could be because
ERVOs comes from soybean oils, which has linolenic acids
that are absent in the first ester. The presence of these acids
could explain the increase in selectivity of this compound.
Figure 2a shows the recovery of copper and iron
obtained as a function of time using BSs as a collecting
reagent. It is possible to observe that BSs presented a flota-
tion kinetics slower than the obtained with ERVOs, since
even at the maximum flotation time studied, it was not
possible to stabilize the recovery curve of both elements.
However, at a flotation time of 8 minutes the copper and
iron recovery were near to 55% and 18%, respectively. It
is important to note that the recovery results of both ele-
ments, were lower than obtained by the ERVOs. On the
other hand, Figure 2b shows a chalcopyrite and pyrite
recovery of 95.12% and 65%, respectively, achieving a
higher chalcopyrite and pyrite recoveries compare to those
obtained with ERVOs.
Figure 3a and 3b show a comparative of the chalco-
pyrite and pyrite recovery as a function of time, using the
Figure 1. Elemental recovery (s) and mineral (b) recovery obtained as a function of time, at pH 8 and using 100 g/t of ERVOs
as collector and 15 g/t of MIBC as frother
Figure 2. Elemental (a) and mineral (b) recovery obtained as a function of time, at pH 8 and using 100 g/t of BSs as collector
and 15 g/t of MIBC as frother